Sheet-iron wheel.



Patented Dei?. 17, 1918.

UNITED sTATEs PATENT oEEIoE.

FRIEDRICH AUGUST scHDLEn, or Annen, SWITZERLAND.

' SHEET-IRON WHEEL.

To all whom z't may concern:

Be it known that I, FRIEDRICH AUGUsT SCHDLER, a citizen of the Republic of Switzerland, residing at Arbon, Thurgau, Swltzerland, have invented certain new and useful Improvements in Sheet-Iron .Wheels; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled inthe art to 'which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters orv figures of reference marked thereon, which form a part of this specicatmn.

The present invention is a process for the production of sheet iron wheels f or .heavy vehicles, especially for motor lorrles. The

' two halves of the wheel are sheet iron disks,

and have channel-shaped spokes; 'Ifhe invention refers principally to the jolmng together of the two pressed wheel halves. For Ythis purpose, specially broad rims are attached to the channel-shaped spokes, which rims are shaped as oval ribs at the back half of the wheel, while at the front half of the wheel they (the rims) are so shaped that they closely connect the two halves of the wheel with one'another after the oval rims have been turned over, so that a mutual clutch takes place in all directions, and the two wheel halves are so tightly pressed together, that it is quite impossible for flulds to penetrate. p

A sheet iron wheel made in this manner has appreciable advantages; in the first place, thev process saves the cleaning and pickling of the iron sheets, whlch 1s mev1- table with the welding or soldering processes. The omission of the pickling with acid completely does away with the a of subsequent rust, and therefore a wheel made in this way is very durable. Moreover, this process produces a strong rib, whlch not only holds the wheel tightly together and protects it against the penetrationof iiuids, but also in its capacity of stlii'emng rib, affords the wheel a distinctly greater strength. A further advantagels the simple and cheap manufacture, as thisprocess renders all soldering and welding material superluous, and merely by pressure tightly .joins the two halves of the wheel together with the use .of a comparatively slmple ypressing tool, thus completely doing away Specification of Letters Patent.

vshown in sector B (Fig. 2),

nger'f Patented Dec. 17, 191s.

Appncation mea october 1s, 1917. serial No. 195,501.

with the necessity of any further work, such as calking and polishing up.

Figure 1 of the drawing shows such a wheel in cross section w-b and c-b of Fig. 2.

Fig. 2 shows at sector A the cut out sheet disk, and at sector B the wheel after the first process. Sector C shows the rimscut, and finally sector D shows the linished Wheel.

F ig. 3 of the drawing shows a section f--g through the fellys-rim, with the turned over rims c1 and 'b completely pressed together. 3 shows a design suitable for electric or oxidacetylene welding, or also for riveting. 3 shows the construction in which the rims of the wheel halves are turned into the encircling band.

Fig. 4 shows a section Z-c 4through a spoke, in which the ends of the rims of the onehalf of the spoke form a thickened oval rib b, while opposite rims c1 are turned around b, and when completely ressed together with Z2, form with it the rig).

Fig. 5 shows an alternative.V

For the production of this wheel, two sheet iron disks are cut in the manner illustrated in sector `A of Fig. 2. In this form the sheet iron disks are placed in an annealing furnace, and then in a warm condition are put between the presses. After the first pressing process, they assume the' form which already possess the channel-shaped spokes 1 with broad rims. The third step in the course of manufacture is the cutting and re-pressing of the rims 2, so that the crosssection of the spokes with the rims a and b is as shown in Fig.4. Inthe last process, the one half of the wheel is laid on the other, and the rims a and b brought by pressure with the aid of a socalled rolling tool into the shape b and c1 shown in Fig. 4.

In the alternative shown in Fig. 5, the rims of the one sheet iron disk do not fold over the rims oi' the other disk, but lthe turned up rims a and b are pressed together by means of a separate clamp 5.

I claim- 1. In a sheet metal wheel, two sheet metal parts, one of said parts having its edge enlarged in thickness and the edge pf the other part folded around said thickened edge.

2. In a sheet metal wheel, a part having its border portion turned to form a iange 2 meezit and thickened on its edge, and e companion having its border portion rolled over said part Whose border portion is in swaged conthickened edge7 whereby seid parts are in neetion therewith embracing said thickened interlocking svvaged connection. edge. n testimony that claim the foregoing as 5 3. n e sheet metal Wheel, a part having my invention, have signed my naine in 15 its border portion turned up, and said presence of two subscribing Witnesses.

turned up portion having :L thickened edge, F. AUGUST SCHDLER.

the distance between said edge and the body Vmegges;

of said part being substantially the thiok- FRANK M, DIMMKE, I 10 ness of the metal used, and e companion part EMIL Mme,

Copies of this patent may be obtained for `ive cents each, by addressing the Gommissoner of Eetentey Washington, ID. G. 

